首页 | 本学科首页   官方微博 | 高级检索  
     


The Effects of Phenyltrimethoxysilane Coupling Agents on the Properties of PTFE/Silica Composites
Authors:Yung-Chih Chen  Hsueh-Chen Lin  Yu-Der Lee
Affiliation:(1) Materials Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu, Taiwan, 31015, R.O.C;(2) Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30043, R.O.C
Abstract:A study on PTFE reinforced with SiO2 was described. This study included the manufactural process of SiO2-reinforced PTFE and the effects of the content of silane (Z6124) on the properties of the composites material, such as thermal, dielectric properties, tensile strength and morphology, etc. PTFE/silica composites of 60 wt% SiO2 loaded with a different coupling agent content were mixed by a high-speed dispersion machine and prepared by a two-roll milling machine. Our results show that the sample treated with 3 wt% silane has the highest tensile strength and optimum dielectric properties. Furthermore, the tensile strength and coefficient of thermal expansion (CTE) increase, and the water absorption decreases, with an increasing silane content. These experiments reveal that silane treatment can reduce the overall hydrophilicity of the composites. Finally, predictions on dielectric and CTE properties are discussed. It has been found that experimental values of the dielectric constant agree well with those predicted by the rule of mixture.
Keywords:composite  dielectric constant  polytetrafluoroethylene  printed circuit boards  properties  silane  silica
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号